[jboss-user] [EJB 3.0] - How to save entities with PrimaryKeyJoinColumn?

[drathnow]

Could someone give me some insight into the correct way to save entities that are joined over their primary key?

I have two entities: Field and FieldAccess.  They both share the same primary key and have a relation over their primary key:


class Field {

    @OneToOne (mappedBy = "field")
    protected FieldAccess fieldAccess;

}

class FieldAccess {

    @OneToOne
    @PrimaryKeyJoinColumn(name = "fieldid", referencedColumnName = "fieldid")
    protected Field field;
}

I'm using Oracle Sequences to generate primary keys.

When saving a new entity, how does the primary key get propagated from one entity to the other?  I've tried the following but the primary keys never end up being the same:

FieldAccess fieldAccess = new FieldAccess();
entityManager.persist(fieldAccess);

Field field = new Field();
field.setFieldAccess(fieldAccess);
fieldAccess.setField(field);
entityManager.persist(field);

What am I missing?



View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120689#4120689

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4120689